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again build up into organs which enable the jiva to become aware of the outside world and of what is going on there. The parts of
man's body. organism thus formed is but a medium of the life-forces and therefore must be subject also to the same sets of causes and conditions which determine the character and configuration of things and bodies in Nature outside. A man's body, consists of a combination of several systems of parts known is skeletal, muscular, nervous, digestive,circulatory and genito-urinary. Each system is made up of a set of organs. Each organ is built up of tissues. All human tissues are born of cells. A cell in its simplest form is a minule mass of a transparent gelatinous contractible granular material, called Protoplusm.
Protoplasm thus appears to be the natural elements of life. It has been characterised with uniformity of structure, chemical com; position and excitability of parts. When any part of the lump of Protoplasm is excited, the lump moves. An amạba is a single lump of protoplasm excitable and contractible in all parts of its 417
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